Closure for liquid-holding tanks, vats, and stills



. 1,634,958 y 1927' A. H. NOYES CLOSURE FOR LIQUID HOLDING TANKS, VATS, AND STILLS Filed Feb. 15, 19 24 Patented 'July 5, 1927.

. UNITED STATES ear-Ear ore;

ALBERT H. NOYES, OF CHICAGO, ILLINOIS, ASSIGNOR.TO HILLS-MCCANNA 00., OF CHICAGO, ILLINOIS, A CORPQRATION OF ILLINOIS.

CLOSURE FOR LIQUID-HOLDING TANKS, VATS, AND STILLS. 7

Application filed February 15, 1924. Serial No. 692,944.

My invention relates to closures for closing outlets or other openings in tanks, vats and stills.

One of the objects-of the invention is to provide a simple, practical and advantageous construction of closure of the class mentioned, and particularly to arrange to avoid injury to the closure by the acids and other injurious ingredients in the liquids contained in the tanks, vats and stills.

Another object of the invention is to provide a practical and durable construction for accomplishing the above result.

In the accompanying drawings Fig. 1- is a view of a portion of a tank or vat provided with a closure embodying my invention;

Fig. 2 is a cross sectional view of the closure removed from the tank or vat;

Fig. 3 is an end View of the closure; and

Figs. 4' and 5 are respectively side and end elevations of a modified form of closure. 7

Referring to the drawings, the tank or vat 1 may be of any suitable or preferred construction. The closure 2 is shown fitted into an opening near the bottom of the tank or vat, said opening beingprovided by a casting 8, or otherwise.

The closure 2 may be fitted to the tank aperture or opening in any desired manner. In the drawings I have shown a closure provided with screw threads 4, which fit corresponding threads in the casting 3.

The closure 2 in accordance with my invention is made so that it will resist the action'of acids and other injurious elements or ingredients in the oil or other liquid contained in the tank 1. shown the closure 2 is constructed with a body 2 which has sufiicient size and is made? of metal of suflicient hardness to withstand the pressure, the stresses and the wear which come to a tank and still closure under the circumstances. In one form of closure especially adapted for oil stills this body 2* is made of an alloy well known in the trade as aluminum bronze, being an alloy of copper, aluminum and iron. The closure is also provided with a shoe or face member 2 secured to the body 2* and forming the surface face which comes in contactwith the liquid In the arrangement 'oil still closure such as mentioned, that is,

a closure having its body composed of aluminum bronze, may to advantage be composed of pure aluminum. In this case the alumi num shoe will protect the closure from inury by acids and other injurious ingredients in the oil so that the closure may be used indefinitely so far as injury by the oil is con cerned, the metal aluminum not being in jured by such acids and ingredients.

The shoe 2 may be secured to the body 4 in any desired way, as for example, by casting it upon the same.

In the form of closure shown in Figs. 2 and 3, the body 4 is provided with a hexagonal socket 6 to accommodate a wrench which may be used to turn the closureso as to screw it into or out of position in the ap-' erture which it closes.

In the modification shown in Figs. 4 and 5 the closure 2 is provided with a. square nut 8, by which a wrench of a different kind may be used to screw the closure in and out.

For tanks or vats holding other liquids, as for example, milk or food products, I would provide a shoe made of tin which is not injured by those liquids andwhich consequent 1y would provide a durable shoe.

Other changes and adaptations of the invention to various purposes and uses may be made within its scope.

WVhat I claim is:

1. A closure of the class specified comprisinga body composed of aluminum bronze, and a shoe on the inner face of the closure composed of aluminum, said closure being provided with screw threads which are applied to both the body and shoe.

2. A closure of the class specified comprising a relatively strong body portion and a facing portion, said facing portion being integrally associated with said body portion antll composed of corrosion resisting materia 3. A closure of the class specified comprising a relatively strong body portion and j a corrosion resisting facing portion, said facing portion being integrally secured to said body portion, said portions each having 2100111111011 threaded periphery for securing means for securing and removingsaid 010- said closure detaohably in place.

sure in use. In WiiZHQFS whereof, I hereunto subscribe 10 4. A closure of the class specified (omprismy name this 14th day 01 January, A; 1).,

ing a reiatii'eiy strong body portion and a 1924.

corrosion resistant facing portion, said portions being integrally associated and having ALBERT I-I. NOYES. 

